So where exactly is it? I've tried east of little lamplight to no avail. Can someone give me basic set of directions from the chemical waste sight, the everglow camp site, little lamplight, or big town. They're the closest markers I have to the area I've heard the mills are closest to. Thanks for the help.
I stumbled across it by exploring from Smith Casey's garage. I just noticed several little triangles on my compass, and headed towards one and it ended up being Evergreen Mills. IIRC, if you fast travel to the garage you arrive facing the door, turn around and head the opposite direction to get you started.